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Full Account (PDF) FULL ACCOUNT FOR: Salmo salar Salmo salar System: Marine Kingdom Phylum Class Order Family Animalia Chordata Actinopterygii Salmoniformes Salmonidae Common name caplin-scull salmon (English), parr (English), hengst (Dutch), Atlanterhavslaks (Danish), outside salmon (English), lax (Icelandic), silver salmon (English), losos (Russian), schaanexw (Salish), Amerikanskiy atlanticheskiy losos' (Russian), slhop' schaanexw (Salish), spring salmon (English), laks (Danish), sãlmao-do-atlântico (Portuguese), skællaks (Danish), solomós (Greek), Atlantisk laks (Danish), las (German), nedfaldslaks (Danish), k'wolexw (Salish), semga (Russian), k'wit'thet (Salish), fiddler (English), Jacobzalm (Dutch), echter lachs (German), sk'wel'eng's schaanexw (Salish), common atlantic salmon (English), zalm (Dutch), breeder (English), grayling (English), ouinanish (English), grilse (English), tacon atlantique (French), Ijle zalm (Dutch), Atlantischer salmon (German), spring fish (English), sebago salmon (English), shamet skelex (Salish), sea salmon (English), grilt (English), saumon d'eau douce (French), ouananiche (English), salmó (Catalan), kelt (English), shmexwalsh (Salish), landlocked salmon (English), N. Atlantic salmon (English), losos atlantsky (Czech), slink (English), smolt (English), losos szlachetny a. atlantycki (Polish), salmon (English), saumon atlantique (French), lohi (Finnish), kutenut lohi (Finnish), sináech (Salish), hoplax (Icelandic), spak'ws schaanexw (Salish), lax (Swedish), kapisilik (English), winnish (English), salmon peel (English), st'thkway' (Salish), losos (Serbian), Atlantic salmon (English), kapisalirksoak (English), salmón del atlántico (Spanish), salmón (Spanish), salmâo (Portuguese), black salmon (English), bradan (English), vraklax (Swedish), alabalik atlantik (Turkish), lachs (German), Atlantic salmon (English), salmling (German), saama (English), lax (Norwegian), laks (Norwegian), laks atlantisk (Norwegian), salmo (Italian), sake masu-rui (Japanese), salmone del reno (Italian), salmone (Italian), salmone atlantico (Italian), losos (Polish), kumaliq (English), kebleriksorsoak (English), salmao (Portuguese), solomos (Greek), unaniche (English), somon de atlantic (English), braddan (English), saamarug (English), saamakutaak (English), sâma (English), gullspångslax (Swedish), losos obecný (Czech), salmâo-do-atlântico (Portuguese) Global Invasive Species Database (GISD) 2021. Species profile Salmo salar. Available Pag. 1 from: http://www.iucngisd.org/gisd/species.php?sc=376 [Accessed 05 October 2021] FULL ACCOUNT FOR: Salmo salar Synonym Trutta salar , (Linnaeus, 1758) Salmo salar , Linnaeus, 1758 Salmo nobilis , Olafsen, 1772 Salmo goedenii , Bloch, 1784 Salmo salmulus , Walbaum, 1792 Salmo caerulescens , Schmidt, 1795 Salmo nobilis , Pallas, 1814 Salmo hamatus , Cuvier, 1829 Salmo ocla , Nilsson, 1832 Salmo salmo , Valenciennes, 1848 Salmo salar , lacustris Hardin, 1862 Trutta relicta , Malmgren, 1863 Salmo gracilis , Couch, 1865 Salmo brevipes , Smitt, 1882 Salmo renatus , Lacepède, 1803 Salmo rilla , Lacepède, 1803 Salmo salar brevipes , Smitt, 1882 Salmo salar biennis , Berg, 1912 Salmo salar brevipes relictus , Berg, 1932 Salmo salar saimensis , Seppovaara, 1962 Salmo salar europaeus , Payne, Child & Forrest, 1971 Salmo hardinii , Günther, 1866 Similar species Summary Salmo salar ranks among the most popularly cultivated fish in the world. Commercial stocks have inflicted significant impacts of wild populations of wild salmon and other fish by way of competition, hybridization, and spread of disease. Great care should be taken to protect these wild fish populations while cultivating S. salar. view this species on IUCN Red List Notes The ecological impacts of Salmo salar stem from cultivated populations which exert negative impacts on wild S. salar and other fish populations within native and introduced ranges. These farmed populations may be considered invasive even in native locations as it affects the long-term survival or genetic variation of native species, or the integrity or sustainability of natural communities (Chadderton, 2001). Global Invasive Species Database (GISD) 2021. Species profile Salmo salar. Available Pag. 2 from: http://www.iucngisd.org/gisd/species.php?sc=376 [Accessed 05 October 2021] FULL ACCOUNT FOR: Salmo salar Lifecycle Stages The Alaskan Department of Fish and Game (2002) reports that, \"Salmo salar spawn in medium to large rivers from fall through spring. Juveniles can spend up to three years in streams and rivers before they migrate to the sea where they then spend up to three more years before returning to their birthplace to spawn and continue the cycle. Some S. salar may survive the spawning event (Pacific salmon do not) and return to the ocean to spawn again\". Uses Salmo salar is an extremely important food fish with over 1,000,000 tons cultivated annually. S. salar comprises over 90% of farmed salmon and over 50% of total salmon harvested. It is also a highly desirable sport fish by anglers (FAO, 2009). Habitat Description Salmo salar is an anadromous species which inhabits the benthopelgaic zone of freshwater watercourses and sea. Large, cool rivers with extensive, gravelly bottom headwaters are essential to early development. As they grow, older juveniles prefer deeper waters and faster currents. They spend 1-6 years in rivers before moving to sea in spring or summer when the sea surface temperature in coastal areas are above 8 °C. Although, some populations remain landlocked. While at sea, S. salar roam vast feeding ranges, preferring temperatures of 4-12 °C, for 1-5 years and grow quickly. They return to rivers in the autumn to spawn. Most were found to return to the same river in which they were spawned. S. salar may withstand depths of up to about 210 m and temperatures 0-28 °C for short periods of time (Renzi, 1999; Fiske, 2006; FishBase, 2009). Reproduction Renzi (1999) reports that, \"S. salar spawn in late fall/early winter. As spawning time nears, males undergo conspicuous changes in head shape: the head elongates and a pronounced hook, or kype, develops on the tip of the lower jaw. The nesting site is chosen by the female, usually a gravel-bottom riffle above a pool. The female digs the nest, called the \"redd,\" by flapping strongly with her caudal fin and peduncle while on her side; the redd is formed by her generated water currents. The female rests freely during redd preparation while the male continues to court her and drive away other males. When the redd is finished, the male aligns himself next to the female, the eggs and sperm are released, and the eggs are fertilized during the intermingling of the gametes. On average, a female deposits 700-800 eggs per pound of her body weight. The eggs are pale orange in colour, large and spherical, and somewhat adhesive for a short time. The female then covers the eggs with gravel, using the same method used to create the redd. The eggs are buried in gravel at a depth of about 12.7 to 25.4cm. The female rests after spawning and then repeats the operation, creating a new redd, depositing more eggs, and resting again until spawning is complete. The male continues to court and drive off intruders. Complete spawning by individuals may take a week or more, by which time the spawners are exhausted. Some Atlantic salmon die after spawning but many survive to spawn a second time; a very few salmon spawn three or more times. Spawning completed, the fish, now called \"kelts,\" may drop downriver to a pool and rest for a few weeks, or they may return at once to the ocean. Some may also remain in the river over winter and return to sea in the spring.\" Global Invasive Species Database (GISD) 2021. Species profile Salmo salar. Available Pag. 3 from: http://www.iucngisd.org/gisd/species.php?sc=376 [Accessed 05 October 2021] FULL ACCOUNT FOR: Salmo salar Nutrition Salmo salar spend up to 4 years in deep-sea feeding grounds feeding on pelagic species such as herring, sprat and squid (FAO, 2009). General Impacts The negative ecological impacts associated with Salmo salar seem to be limited only to domestic fish farm stocks. Sea cages used are prone to tearing from storms, human error, predators or other causes, resulting in the mass escape of fish annually. For example a single storm in Norway resulted in the release of 490,000 farmed Atlantic salmonwhose total weight exceded the wild salmon harvest there for a whole year. Domesticate farm stocks of S. salar that escape can wreak havoc on wild populations by spreading disease and parasites to, competing with, and hybridizing with native salmon and other fish. Fish farming also fouls sea waters with varies toxicants associated with and produced by fish cultivation (Alaskan Department of Fish and Game, 2002; Thorstad et al, 2006; Volpe, undated; Hindar et al, 2006) . Crowding fish in net pens increases stress, which makes them more susceptible to disease. Therefore, when outbreaks do occur they tend to spread rapidly through the captive population. Diseases that occur in captive populations, such as furunculosis and sea lice Lepeophtheirus\nsalmonis can spread to wild fish (Alaskan Department of Fish and Game, 2002; Amundrud & Murray, 2009; Naylor et al, 2005). Escaped S. salar compete with wild populations and other native fishes for resources. Farmed salmon and hybrids (farm x wild) can be expected to interact and compete directly with wild fish for food, habitat, and territory. Farm juveniles are generally more aggressive and consume similar resources as wild fish. They grow faster
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